2008
DOI: 10.1590/s0100-40422008000300036
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Rota hidrometalúrgica de recuperação de molibdênio, cobalto, níquel e alumínio de catalisadores gastos de hidrotratamento em meio ácido

Abstract: Recebido em 23/3/07; aceito em 17/8/07; publicado na web em 10/3/08 HYDROMETALLURGICAL ROUTE TO RECOVER MOLYBDENUM, NICKEL, COBALT AND ALUMINUM FROM SPENT HYDROTREATING CATALYSTS IN ACID MEDIUM: This work describes a hydrometallurgical route for processing spent commercial catalysts (CoMo and NiMo/Al 2 O 3 ). Samples were preoxidized (500 o C, 5 h) in order to eliminate coke and other volatile species present. The calcined solid was dissolved in concentrated H 2 SO 4 and water (1:1 vol/vol) at 90 ºC; the insol… Show more

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